我升级到了 ubuntu 16.04 LTS，HDMI 上丢失了音频。耳机工作正常。
有关我的系统的一些信息：
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: Generic Digital [Generic Digital]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC283 Analog [ALC283 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
_
$ cat /proc/version
Linux version 4.4.0-83-generic (buildd@lgw01-29) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4) ) #106-Ubuntu SMP Mon Jun 26 17:54:43 UTC 2017
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$ pacmd list-cards
2 card(s) available.
index: 0
name: <alsa_card.pci-0000_00_03.0>
driver: <module-alsa-card.c>
owner module: 6
properties:
alsa.card = "0"
alsa.card_name = "HDA Intel HDMI"
alsa.long_card_name = "HDA Intel HDMI at 0xaa034000 irq 48"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:03.0"
sysfs.path = "/devices/pci0000:00/0000:00:03.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "160c"
device.product.name = "Broadwell-U Audio Controller"
device.form_factor = "internal"
device.string = "0"
device.description = "Built-in Audio"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
profiles:
output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5400, available: unknown)
off: Off (priority 0, available: unknown)
active profile: <output:hdmi-stereo>
sinks:
alsa_output.pci-0000_00_03.0.hdmi-stereo/#0: Built-in Audio Digital Stereo (HDMI)
sources:
alsa_output.pci-0000_00_03.0.hdmi-stereo.monitor/#0: Monitor of Built-in Audio Digital Stereo (HDMI)
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: unknown)
properties:
device.icon_name = "video-display"
index: 1
name: <alsa_card.pci-0000_00_1b.0>
driver: <module-alsa-card.c>
owner module: 7
properties:
alsa.card = "1"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xaa030000 irq 47"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card1"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "9ca0"
device.product.name = "Wildcat Point-LP High Definition Audio Controller"
device.form_factor = "internal"
device.string = "1"
device.description = "Built-in Audio"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
profiles:
input:analog-stereo: Analog Stereo Input (priority 60, available: unknown)
output:analog-stereo: Analog Stereo Output (priority 6000, available: unknown)
output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6060, available: unknown)
off: Off (priority 0, available: unknown)
active profile: <off>
ports:
analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: no)
properties:
device.icon_name = "audio-input-microphone"
analog-output-headphones: Headphones (priority 9000, latency offset 0 usec, available: no)
properties:
device.icon_name = "audio-headphones"
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cat /proc/asound/cards
0 [HDMI ]: HDA-Intel - HDA Intel HDMI
HDA Intel HDMI at 0xaa034000 irq 48
1 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xaa030000 irq 47
我应该升级到另一个版本的 ubuntu 吗？
答案1
下次连接 HDMI 时，打开声音设置。HDMI 输出应与内部音频输出一起列出。选择 HDMI 输出。之后打开终端并输入
pulseaudio -k
这对我来说很有效，我希望它对你也有用。